diff --git a/env/rhel7/x86_64/admin/stable/spack.yaml b/env/rhel7/x86_64/admin/stable/spack.yaml
index bc62a7b..bbdc610 100644
--- a/env/rhel7/x86_64/admin/stable/spack.yaml
+++ b/env/rhel7/x86_64/admin/stable/spack.yaml
@@ -8,8 +8,6 @@ spack:
       - $spack/user/$user/spack-stage
     install_tree:
       root: $spack/opt/spack/stable
-  include_concrete:
-    - $spack/spack-psi/env/$os/$target_family/admin/unstable
   include:
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/packages.yaml
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/compilers.yaml
diff --git a/env/rhel7/x86_64/admin/unstable/spack.yaml b/env/rhel7/x86_64/admin/unstable/spack.yaml
index a5cfbca..2fe5d67 100644
--- a/env/rhel7/x86_64/admin/unstable/spack.yaml
+++ b/env/rhel7/x86_64/admin/unstable/spack.yaml
@@ -11,8 +11,6 @@ spack:
   upstreams:
     spack-instance-1:
       install_tree: $spack/opt/spack/stable
-  include_concrete:
-    - $spack/spack-psi/env/$os/$target_family/admin/testing
   include:
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/packages.yaml
     - $spack/spack-psi/env/$os/$target_family/sysconfigs/compilers.yaml